Button



J..WALDES.

BUTTON.

APPLICATION FILED AUG- l, 1919.

1,32%,"Y8 Y Patented Apr. 26, 1921 IIIIIIIIIIIIIIIIIII/lzfififilql lllwmmoz mm Fay rame portion a.

J'TNDIRICH WALDES, OF PRAGUE,

BUTTON.

Specification of Letters, Patent.

Patented Apr.

Application filed August 1, 1919. Serial No. 814,755.

To all whom it may concern:

Be it known that I, J INDi'aICH WALDES, a citizen of the Czecho-SlovakRepublic, residing at Prague, Bohemia, have invented certain new anduseful Improvements in Buttons, of which the following is aspecification.

This invention relates to buttons of the kind generally known asnon-separable or bachelor buttons in which the head or shank members areso constructed that while they may be readily applied to the cloth andfirmly connected with each other they cannot afterward be easilyseparated.

As usually constructed the head member is formed with a socket providedwith a look ing device, and the shank member consists of a base and ashank or spindle adapted to enter the socket and engage the lockingdevice.

Although buttons of this kind are eflicient and usually can be readilyapplied to the cloth it is nevertheless true that usually they do notgrip the cloth closely or tightly and, therefore, are inclined to wabbleon the cloth. Accordin members of the button are so constructed thatthey tightly clamp the cloth and web: bling is prevented. 7 Toaccomplish this, the two adjacent faces of the two members are groovedand ribbed in such manner that the cloth is ressed by the rib into thegroove and is tightly clamped therein.

- In theaccompanying drawings Figure 1 shows a section of a button embodmg my improvements applied to a piece of cloth.

Fig. 2 is a sectional view on the line 2-2 of F 1g. 1 looking upward.

Fig. 3 is a similar view looking in the o posite direction, 6. thatindicated by 'e arrows in Fig. 1. v

Fi 4 is a perspective view of the shank mem er of the button.

The head or socket member A is preferably made of sheet metal,comprising a body ortion a, a top portion a and an inner in the usualway.

tion a are of usual construction and operate I to my invention the twoThese parts may be ofusual construction except that the under side ofthe bodyportion a is formed with an an nular groove a surrounding thecentral I o ening of the socket member through which The shank member Cconsists of an inner base piece a and an outer base piece a. The head ofthe shank D is clamped between the parts a, c in the usual way. Theshank member is of usual construction except/that the inner part c isformed with an annular rib 0 corresponding with the groove 0; on

the socket member.

Ordinarily, as before stated, the opposing faces of the shank member andthe socket member are flat and straight and are not usually broughtclose together so that-the 'cloth is loose between the two members, butaccording to my invention, as shown in Fig.

1, the cloth is pressed by the rib of one memher into the groove of thebther member and is tightly clamped therein. It is obvious that thegroove may be formed in either member and the rib produced in the, othermember, and one or more ribs and grooves may be provided. 7

I claim as my invention 1. A button, comprising a member having a shankand a base to which the shank is attached and whichis grooved and ribbedon one side, and a socket member comprising a hollow body portion formedon its under side with grooves and ribs corresponding with those in thebase of the shank memher, said hollow socket member containing lockingdevices which permit the shank to be inserted in the hollow body toprevent its withdrawal therefrom when once engaged therewith.

2. A button, comprising a member having a shank and a base to which theshank is attached and which is grooved and ribbed on oneside, and asocket member comprising a hollow body portion formed on its under side,with a plurality of grooves and ribs corresponding with the grooves andribs-"0n the base of the shank member, said hollow socket membercontaining spring locking devices which yield to permit the shank memberto be inserted in the hollow frame of the socket member to prevent itswithdrawal therefrom by said lockin devices, said rs being arrange tofirmlyv gri an extended area of a. fabric and thus old the therewith.

when engaged gzooved an ribbed ortions o the two mem- V In testimonywhereof, have hereunto I subscribed m name. I y. I DR HIWA DE

